Chang'an in the 17th year of Kaiyuan was half the prosperity of wealthy families with wine and meat, and half the weirdness of ghost markets and dark alleys.
Shen Yanci, the son of a former minister, found a black bird mirror in a ghost market that could reflect the past in order to clear up his father's grievance for "collaborating with the enemy". Unexpectedly, the ancient mirror cast by Si Tianjian in front of him actually contained the shocking secret of "Yinghuo Shouxin" - if it fell into the hands of the Wu family, the Tang Dynasty would fall into chaos.
Since then, he has become the target of the shadow guards, and has been involved in a conspiracy that spans the court and the world. From the secret words of old friends in Hanshan Temple, to the promise of seven stars in Qujiang Pond; from the strange obstruction of the living corpse guards, to the broken clues of the silk star map, Shen Yanci carries the Black Bird Mirror and pursues it step by step in the fog.
When the past and reality in the mirror overlap, and when the flesh and blood of loyal ministers collide with the machinations of traitors, he discovers that the so-called "Bone of Chang'an" is not only the secret buried underground in the ancient capital, but also the loyal soul that supports the Tang Dynasty. And the truth he is looking for has already been engraved in every brick soaked in blood and tears.
